(19)

(11)

EP 2 056 951 A1

(12)

(43) Date of publication: 13.05.2009 Bulletin 2009/20 (21) Application number: 07789249.5 (22) Date of filing: 16.08.2007

(51) International Patent Classification (IPC):  B01D 36/00(2006.01) F02M 37/22(2006.01) (86) International application number: PCT/GB2007/003137 (87) International publication number: WO 2008/020224 (21.02.2008 Gazette 2008/08)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 17.08.2006 GB 0616465 (71) Applicant: Parker Hannifin (UK) Limited Dewsbury WF12 7RD (GB)	(72) Inventors: FERRARI, Lana West Yorkshire WF12 7RD (GB) CORE, Phil West Yorkshire WF12 7RD (GB) (74) Representative: Albutt, Anthony John et al D Young & Co 120 Holborn London EC1N 2DY London EC1N 2DY (GB)